Create basic CRUD application

.gitignore

@@ -21,3 +21,22 @@
 
 # virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
 hs_err_pid*
+
+HELP.md
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+logs/
+*.lst

pom.xml

@@ -3,6 +3,13 @@
 	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 	<modelVersion>4.0.0</modelVersion>
 
+	<parent>
+		<groupId>org.springframework.boot</groupId>
+		<artifactId>spring-boot-starter-parent</artifactId>
+		<version>2.4.5</version>
+		<relativePath/>
+	</parent>
+
 	<groupId>com.mastery</groupId>
 	<artifactId>simplewebapp</artifactId>
 	<version>0.0.1-SNAPSHOT</version>
@@ -11,6 +18,82 @@
 	<name>demo</name>
 	<description>Practical task</description>
 
+	<properties>
+		<maven.compiler.target>1.9</maven.compiler.target>
+		<maven.compiler.source>1.9</maven.compiler.source>
+		<mapstruct.version>1.4.2.Final</mapstruct.version>
+		<lombok.version>1.18.16</lombok.version>
+	</properties>
 
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-web</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<dependency>
+			<groupId>org.springframework.boot</groupId>
+			<artifactId>spring-boot-starter-jdbc</artifactId>
+		</dependency>
+		<dependency>
+			<groupId>org.mapstruct</groupId>
+			<artifactId>mapstruct</artifactId>
+			<version>1.4.2.Final</version>
+		</dependency>
+		<dependency>
+			<groupId>org.mapstruct</groupId>
+			<artifactId>mapstruct-processor</artifactId>
+			<version>${mapstruct.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.hibernate.validator</groupId>
+			<artifactId>hibernate-validator</artifactId>
+			<version>6.2.0.Final</version>
+		</dependency>
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+			<version>1.4.200</version>
+		</dependency>
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<version>${lombok.version}</version>
+		</dependency>
+		<dependency>
+			<groupId>org.postgresql</groupId>
+			<artifactId>postgresql</artifactId>
+			<version>42.2.20</version>
+		</dependency>
+	</dependencies>
 
+	<build>
+		<plugins>
+			<plugin>
+				<groupId>org.apache.maven.plugins</groupId>
+				<artifactId>maven-compiler-plugin</artifactId>
+				<version>3.8.1</version>
+				<configuration>
+					<source>1.9</source>
+					<target>1.9</target>
+					<annotationProcessorPaths>
+						<path>
+							<groupId>org.projectlombok</groupId>
+							<artifactId>lombok</artifactId>
+							<version>${lombok.version}</version>
+						</path>
+						<path>
+							<groupId>org.mapstruct</groupId>
+							<artifactId>mapstruct-processor</artifactId>
+							<version>${mapstruct.version}</version>
+						</path>
+					</annotationProcessorPaths>
+				</configuration>
+			</plugin>
+		</plugins>
+	</build>
 </project>

src/main/java/com/mastery/java/task/Application.java

@@ -0,0 +1,12 @@
+package com.mastery.java.task;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        SpringApplication.run(Application.class, args);
+    }
+}

src/main/java/com/mastery/java/task/dao/EmployeeDao.java

@@ -1,4 +1,19 @@
 package com.mastery.java.task.dao;
 
-public class EmployeeDao {
+import com.mastery.java.task.model.Employee;
+
+import java.util.List;
+import java.util.Optional;
+
+public interface EmployeeDao {
+
+    Employee create(Employee employee);
+
+    List<Employee> findAll();
+
+    Optional<Employee> findById(long id);
+
+    Employee update(long id, Employee employee);
+
+    void delete(long id);
 }

src/main/java/com/mastery/java/task/dao/impl/EmployeeDaoImpl.java

@@ -0,0 +1,79 @@
+package com.mastery.java.task.dao.impl;
+
+import com.mastery.java.task.dao.EmployeeDao;
+import com.mastery.java.task.mapper.row_mapper.EmployeeRowMapper;
+import com.mastery.java.task.model.Employee;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.core.simple.SimpleJdbcInsert;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Optional;
+
+@Repository
+public class EmployeeDaoImpl implements EmployeeDao {
+
+    private final JdbcTemplate jdbcTemplate;
+    private SimpleJdbcInsert jdbcInsert;
+
+    @Autowired
+    public EmployeeDaoImpl(JdbcTemplate jdbcTemplate) {
+        this.jdbcTemplate = jdbcTemplate;
+        this.jdbcInsert =  new SimpleJdbcInsert(jdbcTemplate)
+                                .withSchemaName("employeedb.public")
+                                .withTableName("\"‘employee’ \"")
+                                .usingColumns("first_name", "last_name", "department_id",
+                                        "job_title", "gender_id", "date_of_birth")
+                                .usingGeneratedKeyColumns("employee_id");
+        ;
+    }
+
+    @Override
+    public Employee create(Employee employee) {
+        Number employeeId = jdbcInsert.executeAndReturnKey(
+                Map.of("first_name", employee.getFirstName(),
+                       "last_name", employee.getLastName(),
+                       "department_id", employee.getDepartmentId(),
+                       "job_title", employee.getJobTitle(),
+                       "gender_id", employee.getGender().getId(),
+                       "date_of_birth", employee.getDateOfBirth())
+        );
+
+        return employee.setId(employeeId.longValue());
+    }
+
+    @Override
+    public List<Employee> findAll() {
+        return jdbcTemplate.query(
+                "select employee_id, first_name, last_name, department_id, job_title, gender_id, date_of_birth " +
+                        "from public.\"‘employee’ \"",
+                new EmployeeRowMapper());
+    }
+
+    @Override
+    public Optional<Employee> findById(long id) {
+        return jdbcTemplate.query
+                ("select employee_id, first_name, last_name, department_id, job_title, gender_id, date_of_birth " +
+                                "from public.\"‘employee’ \" where employee_id = ?",
+                new Object[]{id}, new EmployeeRowMapper())
+                .stream().findAny();
+    }
+
+    @Override
+    public Employee update(long id, Employee employee) {
+        jdbcTemplate.update(
+                "update public.\"‘employee’ \" set first_name = ?, last_name = ?, department_id = ?, job_title = ?, gender_id = ?, date_of_birth = ? " +
+                        "where employee_id = ?",
+                employee.getFirstName(), employee.getLastName(), employee.getDepartmentId(),
+                employee.getJobTitle(), employee.getGender().getId(), employee.getDateOfBirth(), id);
+
+        return employee.setId(id);
+    }
+
+    @Override
+    public void delete(long id) {
+        jdbcTemplate.update("delete from public.\"‘employee’ \" where employee_id = ?", id);
+    }
+}

src/main/java/com/mastery/java/task/dto/EmployeeDto.java

@@ -0,0 +1,38 @@
+package com.mastery.java.task.dto;
+
+import com.fasterxml.jackson.annotation.JsonFormat;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotEmpty;
+import javax.validation.constraints.NotNull;
+import java.time.LocalDateTime;
+
+@Data
+@AllArgsConstructor
+@NoArgsConstructor
+public class EmployeeDto {
+
+    private Long employeeId;
+
+    @NotEmpty(message = "First name cannot be empty")
+    private String firstName;
+
+    @NotEmpty(message = "First name cannot be empty")
+    private String lastName;
+
+    @Min(value = 0, message = "Department id has to be greater than 0")
+    @NotNull(message= "Department id cannot be empty")
+    private Long departmentId;
+
+    @NotEmpty(message = "Job title cannot be empty")
+    private String jobTitle;
+
+    @NotEmpty(message = "Gender cannot be empty")
+    private String gender;
+
+    @JsonFormat(shape = JsonFormat.Shape.STRING, pattern = "yyyy-MM-dd'T'HH:mm:ss")
+    private LocalDateTime dateOfBirth;
+}

src/main/java/com/mastery/java/task/error_handler/ApiError.java

@@ -0,0 +1,27 @@
+package com.mastery.java.task.error_handler;
+
+import lombok.AllArgsConstructor;
+import lombok.Getter;
+import lombok.Setter;
+import org.springframework.http.HttpStatus;
+
+import java.util.Collections;
+import java.util.List;
+
+@Getter
+@Setter
+@AllArgsConstructor
+public class ApiError {
+
+    private HttpStatus status;
+    private String error;
+    private List<String> errors;
+
+    public ApiError(HttpStatus status,
+                   String error,
+                    String errorAsList) {
+        this.status = status;
+        this.error = error;
+        this.errors = Collections.singletonList(errorAsList);
+    }
+}